%0 Journal Article
%T Neutrino Emission from Magnetized Proto-Neutron Stars in Relativistic Mean Field Theory
%A Tomoyuki Maruyama
%A Nobutoshi Yasutake
%A Myung-Ki Cheoun
%A Jun Hidaka
%A Toshitaka Kajino. Grant. J. Mathews
%A Chung-Yeol Ryu
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevD.86.123003
%X We make a perturbative calculation of neutrino scattering and absorption in hot and dense hyperonic neutron-star matter in the presence of a strong magnetic field. We find that the absorption cross-sections show a remarkable angular dependence in that the neutrino absorption strength is reduced in a direction parallel to the magnetic field and enhanced in the opposite direction. This asymmetry in the neutrino absorbtion can be as much as 2.2 % of the entire neutrino momentum for an interior magnetic field of \sim 2 x 10^{17} G. We estimate the pulsar kick velocities associated with this asymmetry in a fully relativistic mean-field theory formulation. We show that the kick velocities calculated here are comparable to observed pulsar velocities.
%U http://arxiv.org/abs/1201.3455v1